Radiation-reactive precursor stages of highly heat-resistant pol

Details Radiation-reactive precursor stages of highly heat-resistant pol Radiation-reactive precursor stages of highly heat-resistant pol

1981-06-04

1983-02-01

Brammer, Jack P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

430270, 430280, 430281, 430296, 430300, 430311, 20415915, 20415918, 528287, 528289, 528291, 528337, 528341, G03C 168

Patent

active

043716857

ABSTRACT:
The invention relates to oligomeric and/or polymeric radiation-reactive precursor stages of polymers on the basis of heterocycles and has the objective to make available radiation-reactive precursor stages of this kind in which the problems arising due to the need of using organic solvents are eliminated. For this purpose, the invention provides addition products of cyclic carboxylic-acid anhydrides with hydroxyl group-containing compounds, where the hydroxyl group-containing compounds represent addition products of olefinically unsaturated monoepoxides on carboxyl group-containing prepolymers of polyimides, polyisoindoloquinazoline diones, polyoxazine diones and polyquinazoline diones or on amino group-containing prepolymers of polyimidazoles and polyimidazopyrrolones or on hydroxyl group-containing prepolymers of polyoxazoles. The radiation-reactive precursor stages according to the invention are suited, for example, for the manufacture of highly heat-resistant relief structues.

REFERENCES:
patent: 3957512 (1976-05-01), Kleeberg et al.
patent: 3964908 (1976-06-01), Bargon et al.
patent: 4121936 (1978-10-01), Matsuda et al.

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